ICM7170 Datasheet, PDF (4/13 Pages) Intersil Corporation – Microprocessor-Compatible, Real-Time Clock

ICM7170
DC Electrical Specifications T_A = -40^oC to 85^oC, V_DD +5V ±10%, V_BACKUP V_DD, V_SS = 0V Unless Otherwise Specified
All I_DD specifications include all input and output leakages (ICM7170 and ICM7170A) (Contin-
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
Leakage Current INTERRUPT, I_OL(2)
Capacitance D0 - D7, C_I/O
Capacitance A0 - A4,
C_ADDRESS
V_O = V_DD
INT SOURCE
-
0.5
10
µA
Connected to V_SS
-
8
-
pF
-
6
-
pF
AC Electrical Specifications T_A = -40^oC to 85^oC, V_DD = +5V ± 10%, V_BACKUP = V_DD,
D0 - D7 Load Capacitance = 150pF, V_IL = 0.4V, V_lH = 2.8V, Unless Otherwise Specified
PARAMETER
MIN
MAX
UNITS
READ CYCLE TIMING
READ to DATA Valid, t_RD
ADDRESS Valid to DATA Valid, t_ACC
READ Cycle Time, t_CYC
Read High Time, t_RH
RD High to Bus Three-State, t_RH
ADDRESS to READ Set Up Time, t_AS
ADDRESS HOLD Time After READ, t_AR
WRITE CYCLE TIMING
-
250
ns
-
300
ns
400
-
ns
150
-
ns
-
25
ns
50
-
ns
0
-
ns
ADDRESS Valid to WRITE Strobe, t_AD
ADDRESS Hold Time for WRITE, t_WA
WRITE Pulse Width, Low, t_WL
WRITE High Time, t_WH
DATA IN to WRITE Set Up Time, t_DW
DATA IN Hold Time After WRITE, t_WD
WRITE Cycle Time, t_CYC
MULTIPLEXED MODE TIMING
50
-
ns
0
-
ns
100
-
ns
300
-
ns
100
-
ns
30
-
ns
400
-
ns
ALE Pulse Width, High, t_LL
ADDRESS to ALE Set Up Time, t_AL
ADDRESS Hold Time After ALE, t_LA
50
-
ns
30
-
ns
30
-
ns
12-8